Another place to go before it gets too hot… the rocky mountains around Jacumba, in the extreme southeast corner of San Diego County. Back in 2009, I pushed a Nissan Murano with all-wheel-drive to the limit on these roads and it came out just fine. If you’re careful, anything with decent ground clearance will be able to handle the roads. Watch out for ruts and rocks and make sure you can get out of where you get in.
Enjoy “In the Hills of Jacumba.”