One “thing” I’ve just done, or rather nearly done, is have one of each car in stock form and with a preset (eg, five Mazda RX-7 ‘97 versions).
There are, though, three cars where this doesn’t appear to be possible - Viper ‘13 AE, 350Z Low Car and 350Z High Car. I do have one of each from getting the accolade so in some situations it seems reasonable to acquire an additional one.
Block auctions, even block removal of the car, whatever. Note there is a precedent of sorts with the strange choice of the Jaguar XJR-15 as a week zero reward.
Maybe from a competition, it’s not hard to check if the accolade is complete.
Maybe if the tasks appear in the playlist again, that’s totally within PGT10 control and can only be acquired once per event. I do note the Viper ‘13 AE one could have appeared in the current series but for whatever reason wasn’t a playlist task as it was before (IIRC).
So, yeah, getting a second one of each of those would be good.