CARB survey letter

At the present time I am not putting much milage on my "old" cars. Doing some rust repair on my 64 Valiant and have the rear window out. 88 Diplomat has the dash partly removed for a/c repair. 84 D-100 has motor out for reseal and new clutch. So I am stuck driving my piece of crap 2011 Ford Fusion. But when the "old" cars are running, they are the daily drivers, and the Ford is parked.