Here is an extensive and detailed high-quality review of the Tesla Model S P90D in Germany. This review could be used as base material before purchase - including walkthrough, driving and Autopilot tests.
The Tesla amazed the reviewer, who called the Model S one of the best cars ever, from the driver's perspective.
One of the weakest point of a Tesla (but still not bad at all) are the seats. The acceleration is sometimes too overhelming and some drivers probably will be more happy with less capable versions of the car.
All the other aspects from interior, to driving, silence and more were highly appreciated.