Demon Driver was a revolutionary game in two ways. Firstly, the road on which your car would drive was an endless inner workings used to revolve. See what I did there? Revolve? “Revolution”-ary? No? *sigh*
Secondly, and more importantly, it gave you the feeling of being a “proper” driver. There was a steering wheel that you could use to steer a physical car, not an electronic one made entirely of lights, left and right to avoid other real cars that came towards you on a real road.
There were two lanes of traffic, both of which had cars on. You chose which gear to use and, depending on the gear, your speed increased or decreased accordingly. Using gears was essential if you wanted to overtake or slow down quickly enough not to shunt the oncoming car.
You would set the timer off and try to drive for as long as possible without crashing.