Leinholder liability

Dear Lazywebs,

I have loaned a friend money for the purchase of a motor home, with everything taking place in California. I am named as leinholder on the title. If he is uninsured or insufficiently insured and causes an accident, am I liable for damages?

A knowledgeable friend says yes, while several dubious content-farm sites say no. I have been unable to find an authoritative answer.