Enduro

Stuff I found out by playing

The goal is to pass a certain number of cars per day.
If you hit another car, you get bumped back and lose control for a short time.
If you don't pass enough drivers in time, the game will end. However, I've had it end at a different time each game, so I'm still trying to figure out how this works. Though from my experience, it always ends at a lower number on the timer when I'm nowhere close to winning than when I've nearly passed all of the cars. Maybe it gives you more time if you're close?
There are visibility changes: when it becomes night, you can only see the cars' headlights, sometimes you drive through bits of fog so you can't see the cars until they're closer to you.
There are also icy patches which make your car harder to control. Whenever I've played, I only got the fog at night and the ice during the day, but I've never made it past day 1 so that may change as days pass.
The bottom part of the screen displays 3 numbers: the top number is the timer that keeps track of how long you've been playing (I assume). The bottom left number is the day you're playing, and the bottom right number is how many cars you have left to pass in this day. This number decreases every time you pass a car, but increases whenever a car passes you.
The road varies from curving left, curving right, and being straight on. I haven't been able to distinguish a pattern for when it changes from one to another, or for which direction it changes to.

On the first day, you have to pass 200 cars. Each day after that, you have to pass 300 cars.
If you successfully make it through five days or more, a trophy pops up on the screen.