They build cars in many segments. Tesla build one model, while VW has 27 models (from their german website) + commercial vehicles. Also, they own several brands like Audi, Bentley and some others. Most of them has a wide model range.

I noticed that as well - One wonders what % of that expenditure is on improving R&D processes to lower costs, assuming that most of that cost is on non-renewable hardware modeling (hurling one-off test cars at brick walls and such). Also, is racing considered part of the R&D budget?