Not really any money in gaming forums there more hassle than there worth really.
You could reasonably do a gaming forum based obviously around racing games or a more realistic and maybe profitable one based upon F1.
This all takes development money to have something reasonably good but its just so out there the name and idea.
It could possibly make a brand name in respects but its an uphill battle.
You could reasonably do a website with motoring products.
I'm personally not taken with this, its like having to decide if you want pizza or a chinese for dinner and you havent had either for ages and just keep umming and arrging about it.