We are looking for a good carseat for our growing child. We like a lot German Romer brand, because of the quality. But now with the new Tesla Model S, I was wondering if anyone is using BRITAX RÖMER KIDFIX SL or KIDFIX XP (CAR SEATS | Britax Rmer Childcare) car seats? There is no Tesla on the compatibilit lists of those seats. What makes me doubt is that a Google search returns this: Probleme mit Kindersitz RÃ¶mer Kidfix XP Sict Freunde , but I am not really able to understand the problem that they are talking and whether it applies to any/one of those models. Is anyone using these seats in their Model S? Any comments or suggestions?