Cons: Going to burn some extra hydrocarbons. Possible police citation for noise ordinance. Consider 1st half only.
Pros: Nobody gets out of the car, so there’s no “gathering”. 10-20 coordinated car horns can make a lot more noise than a similar handful of fans outside the stadium.
I don’t know if campus will let you actually park in the lot next to the stadium, or if you’d need to be staged nearby, and just make a drive-by ruckus after each score.
So, I’m leaving it up to you locals at this point. If there comes a moment in the broadcast when I hear a chorus of horns approximating the cadence of Rise and Shout, please know that I salute you, and will be on my feet and joining from afar.