With graphics turned to low (which just looks retro to me and fits the vibe of the game like I am playing midtown madness-ultra) Motor Town is a blast on the Steam Deck!
What really makes it fit well with the deck is the autopilot feature where you can hit a button and your car will automatically navigate to the next step of whatever job you are doing. That makes it perfect for picking up and putting down while you do other stuff.
That is really cool! I submitted a suggestion awhile ago to the devs but I reallllly hope they add a custom point to point race system so you can easily create street race/rally races.