time for a new car?

now that we've had to buy cars for our teenagers to drive (it's well worth the money for me since they can drive themselves around and occasionally help me with driving), we haven't gotten new cars for ourselves quite as often.  yesterday craig's car turned over to 100,000.  but i dont' want him to get a new car because i want to get one first.  after all these years of driving a big ol' suburban, i want to drive something smaller.  it's going to be rare that all seven of us are in a car together now.  all our cars still look pretty good, so we should probably all just drive the cars we have.