[Nowhere Man 1966]

I think EMP is overrated unless you are right next to the source. I think most cars would still run although there are a few that can be knocked out but on most tests, you just turn the key and it will start again. Auto electronics are generally designed to withstand a lot of harsh conditions. Generally if it isn't hooked to the power mains and you have your antennas folded or disconnected, it will most likely survive. The computer you are using now has a good chance of being fried but the one that is disconnected and sitting on the shelf in your basement or Bob's Computer shop should be OK.