Way to go OP! You successfully abused two cars you have no intention of buying. Tool.
People like you are the reason why I never buy a car off the lot unless the odometer says 2 - 3 miles from the truck to the lot & PDI.
I ordered my mustang & was fortunate to see it on the freeway on it's way to being delivered to my dealership. Even talked to the truck driver in traffic about my car on his rig. I saw it roll off the truck & the odometer had 43-miles on it. I've read that they randomly test vehicles after production. Doesn't bother me a bit. I'd rather them test it & make sure everything is OK then to have it delivered & have to get something fixed later.
Also, as far as the O.P.'s test drive goes, I don't really see the big deal. These cars are built to be driven hard. There are no break in periods anymore so nothing was hurt. If it couldn't handle that bit of abuse, then it's not worth a darn.
But I do understand that people want virgin or unmolested vehicles. Nothing wrong with that. But it's just not a bid deal to me.