The whole superhero idea sounds interesting to me. Well done! Here is some feedback. Hope this helps:
Pros
Superhero theme well done
Consistent art style (Music, SFX, Art)
Cons
Way too hard (increase time)
Driving can make motion sick
Not clear if game was lost or won when hearing news sfx
Driving forward and backwards can get mixed up
Ideas
Ability to stop the time for a certain amount in order to think about the strategy what the hero needs
Split up time for segmente (1 min driving to destination, 1 min selecting correct item)
Navigation arrow should be more in the front