Link to video
What you see is what you get. That's basically everything what can be told about this game. Also known as MotoRace USA and Traverse, but for different ports of the game.
https://gamefaqs.gamespot.com/arcade/584166-motorace-usa/faqs/32365
It takes just a little patience to beat every race without dropping your speed once.
There are 5 sets of levels (tiers). Tier 6 and onwards is a copy of Tier 5, with no boost to your maximum speed (420 km/h), so that's basically is the point of stop.
The races are relatively easy to pass without dropping speed once. However, there is a catch. If you override more cars on top-down levels (city and desert), on checkpoint 4 (our of 5 in each tier) you will have to wait for score to count up, and it's really hard to manipulate car sequences and their actions to save time on checkpoint screens. I tried optimizing it all, but a car can crash or drive off roads once it leaves the screen, and this speeds up the spawn of the next car. As a result, overriding a car at the very end of a level might not be a bad option.
In short, it's very hard to aim for real time. I won't be surprised if eventually a TAS will be submitted with "Aims on in-game time, instead of real time" tag.
On top-down levels, the cars can be manipulated by changing your position. On overview levels (where cars drive at you), the range of manipulations is much narrower, not that easy, but is also dependent on your horizontal position.
In the TAS shown above, I tried dropping the speed to let the last reachable car stay in front, to save some time on the upcoming checkpoint screen. I'm sure, the optimization is not acceptable.
User movie #638714449390441826
The game is very boring. I don't feel like investing my time into it. Not even to submit a TAS which aims for in-game time
TASing is like making a film: only the best takes are shown in the final movie.
