I've had good luck with Xpel(one of the more well know clear bra manufacturer). One of their premier line is the Prime XR Plus
It's prime time - XPEL PRIME automotive window tint is offered in a variety of performance tiers to fit every car owner's needs. Look cool, drive comfortably, and stay protected!
www.xpel.com
Also, if you want to keep out the heat, you should check out some of the threads on the Telsa forums - since they are trying to converse the battery from running the air conditioner too much. Also - you might want to check out tinting the front windshield(at 75% - which is almost indistinguishable from normal clear glass). This way - the whole car/truck will be covered. While it will still get hot if you do let it sit in the sun for an extended period - it won't be just as hot - and it will be much quicker to cool down the car - and maintain that temperature as well.
The Xpel will have a 10 year warranty as well - so if it ever peels, or bubbles, it will be covered.
Not that you ask - but I have a dashmat on all my cars(dashcare.com). It will protects the plastic dash from being sticky and burning hot. I went with the 62 Graphite fabric if you are curious. The other lighter color will create a glare - and I didn't want to go all black since it would be absorbing heat.