Anyone know how to avoid missiles?

You know the feeling... You're cruising along happily in pole position when you hear the dreaded "MISSILE". You sideshift like crazy hoping to avoid the lock-on but then a few beeps later you inevitably crunch to a standstill and watch your position move slowly down from 1st to 7th. You start to pull off hoping to prevent coming in last but it's all in vain as you are a now a sitting target and get nailed by the last guy's rockets :'(

Anyone know how to stop this from happening?