When you accelerate in a car, the seat you are sat in pushes you forwards, with the result that you feel like you are being ...

Or you could, you know, get something to carry your hot air balloon around. Yes, really, a pre-war balloon car. And when we say pre-war, the roots here stretch back to Edwardian times, prior to ...

You're sitting in a car that's not moving. Also in the car is a helium-filled balloon, which is resting up against the car's ceiling somewhere near its middle. The driver hits the gas and the car ...