Tonight I noticed smoke coming from under the hood right side on an intermittent basis. Initially I thought it was another car creating the smoke. It started again as I was within 6 blocks of home, then stopped and as I attempted to put the car into reverse to park it at home, it died. Any ideas? I do have a small crack in the tranmission block, but we've been monitoring fluid level, although I saw some leakage on the pavement yesterday. In the past year I've replaced the steering rack, the head gasket, had oil leaks repaired, timing belt and radiator replaced. Having it towed tomorrow morning. Any ideas? Thank you.