Make a cheat in which you make a fingernove like Up + Down + Up. Then you get a blast for 100 seconds.
Always collect more is to pick up the red fuel canisters which are littered along the road.
Balance your massive jumps with slamming down to get more gas.
Hitting both of the buttons simultaneously will bring you crashing downwards.
You can always pick up some extra coins by watching some adverts.
Connecting with friends via Facebook will also net you some in-game currency.
If your ghosted friends are putting you off your concentration on the race-track, head into the options menu from the main screen and tap on the Ghosts symbol. If you want them to re-appear, tap on the icon again.
How can I tell how much mission progress I've made?
To see which cars you've maxed out the missions on check out the car list section of the menu.
If you land with all four wheels on the ground and you'll get a much bigger speed boost than you will if you land clumsily.