" ... San Diego ... (no) to let me practice in their vehicles ... have my permit.... "
You can walk into the DMV, pass written and eye tests, walk out with a motorcycle permit.
You can ride daytime, solo, no freeways. You can get a 125cc Twist-n-Go scooter, such as a Lance Cali Classic from Main Street Scooters. To get the license, you can pass the "Lollypop" test at the DMV, or (best) take the motorcycle class -- they will allow you to use your own scoot so you don't need to learn "clutch" and "gears."