Aunt Maya: Put your seatbelt on please, Rian.
Rian: Why do we need to wear seatbelts, Aunty Maya?
Aunt Maya: For safety - just in case we need to stop suddenly or we bump into another car. The seatbelt stops you from flying forward and being hurt.
Rian: Oh, what a great idea seatbelts are! So what part of our journey are we doing today?
Aunt Maya: We're driving south from here in Scotland, all the way through England. Ready?
Rian: Let's go. It's so quiet in this car.
Aunt Maya: That's because it's an electric car. Many cars have an engine that uses petrol or diesel fuel to make them go. They let out smoke and pollution that is not very good for the planet or for us. But electric cars have a big battery that powers the motor and makes the car move. They cause less pollution because they don't make any smoke or fumes.
Rian: Like a bigger version of my remote-control car at home.
Aunt Maya: A bit like that, yes.
Rian: Can this car go really fast?
Aunt Maya: It can go fast, but we need to stick to the speed limit.
Rian: What's a speed limit?
Aunt Maya: A speed limit is the fastest speed you're allowed to travel. That sign shows us that this road has a speed limit of 20 miles per hour.
Rian: Is that how fast we're going?
Aunt Maya: We are just a little slower than 20.
Rian: Why do we have to go so slowly?
Aunt Maya: It's for safety. We're in a town and there are people walking around, people on bikes and the roads are quite small.
Rian: That car looks different.
Aunt Maya: Yes, that is a very old car. It is different from cars today.
Rian: The wheels are really thin.
Aunt Maya: It doesn't drive as fast and it doesn't have any electric windows.
Rian: What? When were the first cars made?
Aunt Maya: The first motor cars were made more than 130 years ago in Germany and soon after, cars were being made in factories all around the world. In America, someone called Henry Ford made a car that lots of people could afford to buy, so it didn't take long before cars were everywhere.
But cars weren't the first type of transport to use wheels. Wheels were an amazing invention. Some people even say it was the most important invention of all time. People from all over the world have been travelling with wheels for a long time. For example, some built carriages and chariots with wheels that could be pulled along by animals or people.
Rian: Pulled by people! That sounds like hard work.
Aunt Maya: And then of course, there were bicycles. The first bike was invented over 200 years ago in Europe.
Rian: Wow, that bike looks so different to bicycles today.
Aunt Maya: Not all that comfortable - which makes this next story even more amazing. Annie Londonderry became the very first woman to cycle all around the world. She set off from this part of America in 1894. She had to catch boats between some countries, but she cycled across Europe all the way through Asia and then caught a boat back to America from Japan. She finished her journey exactly a year later, where she had started.
Rian: Amazing! But she's not wearing a helmet. Mum always says you should wear a helmet when you cycle.
Aunt Maya: Well spotted. Bicycle helmets hadn't been invented when Annie made her journey. They didn't realise how dangerous it could be if you fell off and bumped your head. Now we know that helmets can help keep our heads safe.
Rian: This road we're on now is much bigger.
Aunt Maya: This is called a motorway and this one has three lanes on each side so more cars can go on the road.
Rian: And we're going faster.
Aunt Maya: Yes, the speed limit here is 70 miles per hour.
Rian: There are a lot of different vehicles on the motorway too.
Aunt Maya: Yes, lorries which transport things like food all over the country.
Rian: There's a van. My dad has a van for his work so he can carry all his equipment.
Aunt Maya: He does. And look - there's a passenger coach.
Rian: A coach can carry lots of people.
Aunt Maya: They transport more people in one journey than we can in a car.
Rian: My favourite type of car is a racing car.
Aunt Maya: They are pretty great. People race lots of different vehicles for fun.
Rian: Like monster trucks. When I'm older, I'm going to try and drive one of those.
Aunt Maya: An electric monster truck, I hope.
Rian: Definitely.