If you are looking for a pissing match comparing Americas Cup to F1. There is no comparison. The 20 mill was just for the engine budget not including testing. They have a 20 person crew they take to the track and all of their races are in different countries and the cars are flown to each event. Then you have the consumables such as fuel, tires carbon brake pads and rotors. Then you account crash damage which is rarely seen in Americas Cup.

To do a private test which is common, you have to rent the entire track and hire a safety team. The safety team is required by law for any testing that exceeds 55mph.

I switched from racing cars to sailboats and the budget differences are quite dramatic. The best part is that the testing is relatively free. Even sharing a track for testing is quite expensive.