The helicopter, in the Monster Truck Madness series, is the default recovery tool. When you press H during a race, the helicopter hooks onto your truck, rights it, and then drops you back on the track in the approximate location where you left it.
Once the helicopter has picked you up, you also have the option of pressing H again to have the helicopter drop you in your current location. Sometimes this feature is used as a emergency brake.
Using the helicopter to transport for your truck to get from place to place on the track is considered "cheating" in online racing, and it may end in disqualification.