If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Space - spiked wheels.
WASD - drive.
In late 2015 the first nuclear missiles rained from the sky incinerating millions upon millions of the human race! They descended slowly towards your city like fireflies in the night sky. your only hope was to outrun them in your trucks which you have twenty of, how many can you escape with?! Good luck!