When a bike that a character is riding explodes, the character takes the D3 Strength 8 hits with the -3 save modifier (the Strength of the explosion). Roll the scatter dice to see how far he is thrown, taking an additional hit equal to half the distance thrown, and whomever he may land on also takes a hit. He must then spend his next movement phase regaining his feet. If you roll a hit or misfire the character is trapped in the wreckage and unable to take further part in the battle.
Power fields may not be used to save from the explosion (it originates too close), but other fields may be used.