introducing the Problematic Fuels Only Racing League! the rules are simple:

• your fuel must be dangerous and impractical, as approved by a panel of judges
• no rockets or turbines! your fuel must go into a piston engine
• go!

safety tip: next time you seize an illegal shipment of ammonium nitrate, don't just throw it in some warehouse to blow up and level half your city years later. instead, mix it with diesel and start a state funded racing team!

note: rules lawyering about what exactly counts as a "piston engine" is allowed and encouraged. however, the more it resembles a normal car engine the more bonus points you get.

There's a lot of bonus points; you can actually lose the race and still win if your fuel is cursed enough or your engine seems impossible enough. conversely, you can just barely squeak past the Problematicness Requirements with your Crude Oil car, win the race, and still lose to the Random Fragments Of Unexploded WWII Ordnance team that barely makes it across the finish line