I really like the theme and visual presentation, and I think this could be quite fun to play with a few tweaks.
I'm having a really hard time collecting the yellow and red "+" symbol buffs. The hitboxes could be bigger to make those easier to grab. They seem to spawn on a particular grid/offset that my player blip isn't constrained to, so I spend a lot of time missing them, driving in mad circles around them, and generally just being frustrated by that mechanic.