Homemade Gasoline RC Car From Weedeater

Sup uncrustables, I made an rc car a while back. I'm still working on it but I decided to put up a test video to show my progress. Anyway, after i had most of it done I realized I should have made a detailed Instructable. I tried to show as much of the components as possible in the video. I have lots of ideas including a PVC roll bar, an expansion chamber exhaust, and maybe remote electric start. I dunno, just ideas. Tell me what you think and what I should do to it to make it better.