My wife loves cars, and I brought NASCAR to her world...which she now gets as a strategy thing after hearing about what all happens in the pits to try to adjust the cars to the track and combining that to her own car engine repair knowledge. We've been to three races in the last 3 years, too. I've tried to get her into F1 or Indy, but she's not a fan of the rotary engine sound.

We've got the Asmodee set and their two current expansions, then some printed out fan-made tracks. She's not into the in-depth rules, so we generally run a 3-lap race using basic rules and allow for pitstops so that we can utterly burn through the last lap if we feel the need. Also, we're not much of the "cart/street racing game" type console players (other than Mario Kart), so we just run the "street racing" tracks with standard racing rules.
I just love the flexibility...we've taken to using the "Redline/Slipping the Clutch" optional rules from the old Formula De set too, allowing you to burn a damage point (or Engine if using full/advanced rules) to advance one extra slot. We had one game were each of us was just 1 slot short of a turn zone about 5-6 times and that got old fast.