Teaching Someone to Drive - Recipe for Divorce?

So I'm going to be teaching Kieren (my husband) to drive.  I've told him to book some lessons too but going on his general laid back approach to things, I doubt that'll happen any time soon.  I've insured him on my car, all we need now is some L plates and an empty business park.  Is it a good idea?  We tried working together and that ended in disaster as he HATES being told what to do!  Oh well, we'll see what happens.  I suppose he can't be any worse than Maureen from that TV show Driving School!