Fun, but impossible. You cant even get to repair the car between rounds let alone finish off the last zombies before the next round appears at around level 25.
The trick is to let it fly without the boosters until it starts to go down, then hit the rockets, when they go out, hit the boosters, if you found this helpful, hit the +!
 "Accelerator")
 "Road of the Dead")
 "Space Trooper USA")
 "Parasite Strike")
 "Just Chatting")
 "Epic Combo!")
 "You Have To Defecate Upon King Bhumibol")
 "Cannoncrotch")
 "Alxemy")
 "Dude and Zombies")
 "Learn to Fly 2")
 "Gravitee Wars")
 "Death Worm")
 "Toss the Turtle")
 "Meteor Launch")
 "Cover Orange 2")
 "Pixel Grower")
 "Demons Took My Daughter")
 "Destroy the village")
But in a good way, right? :p