Car Insurance quote suddenly disappeared?!?

How much will insurance expense for a 16-year old?
Whats the most inexpensive and most effective insurance that could address this in socal?
"The length of time is it possible to proceed after purchase of the new-vehicle without  insurance -home-office-resource">insurance ? I understand it should be completed immediately but I've other items going on today and dont have time for you to get rates currently. If you have no grace period I recently wont push until I get insurance