Sigh...
tl;dr: Got the Seasucker Talon, 3rd use cracked my rear glass.
So going back a month + i bought a Rockbros b/c the seasucker was over twice the price, used that for my hybrid bike, worked pretty well. Did the 3 suction cup (1 bike) setup on the front glass and the single one for the rear tire in the rear. Had no issues for the 5x i used it.
Ended up getting a nice new mountainbike and didn't like the idea of be chinsing on the cheap bike rack and decided to upgrade to the Seasucker, and man, quality wise it's a huge difference fwiw.
Used is as Seasucker recommends
https://cdn.shopify.com/s/files/1/1524/8364/files/Tesla_Model_3_Special_Instructions.pdf?637 , 3 on the back glass and the one on the trunk lid. Did that about 3/4x and just now it cracked. I let them know about my experience. I'm not mad at anyone, just slightly disappointed in Tesla's glass durability.
And before everyone complains....that's the risk i took. And i can afford the replacement/deductible. Still sucks. I really don't want to add the roof racks + extra just for one bike but looks like that's what I'll do.