White smoke came out of the steering column behind the steering wheel. on 2001 Saturn L300

It is a 1997 Saturn SL2. It lurched to a stop when put in reverse and there is no turnover when trying to start it. Up til then, it was running fine. No one we have talked to has heard of this problem. Any suggestions of what could be wrong would be appreciated.

Asked by for the 2001 Saturn L300