Not only Morgan, Lotus pads stick to discs too. I live a mile off the road so driving the car after washing is a non starter. I try to remember to push the car forward or back a couple of feet the next day, before the pads have stuck fast. If they have stuck I free them off by pushing directly on the top of the tyre ( if I clean car on a Sunday this usually involves me mucking about before work on Monday wearing a decent suit and a good pair of Crocketts

) Once freed off that's problem solved until the next time the car is washed