PC people really are clever and dedicated folks. If they're not inventing new and grotesque ways to contort the G-Man's face and limbs, they're making mods for games that have only been out for a few hours. Codemasters didn't include cockpit views in their enjoyably silly racing-game-with-a-plot, GRID 2. The reason given was that only 5% of people who played the original ever used the in-car cams and "they are expensive to run due to the requirement for high-resolution interior textures which are seen close-up and require a considerable amount of in-game memory (to store) and processing (to render)." Intelligent sorts have already modded the game, adding cockpit views, and, lo, the interiors are indeed low resolution, but there are already folks working to sharpen the whole thing up. Video under the hood.
I'm one of the (apparent) 95% who would rarely use a cockpit view even if it were available, but I may try this later, just to see if I immediately become better/worse at driving.