Not really sure how you would conveniently explain a pickup like this within the context of the vehicle's weapons system. Currently it seems like the way it works is that you drive over the holographic pickup markers and either ammunition is teleported into your weapons or they have been unlocked temporarily for a one time use. Unless you're suggesting a battering ram that is holographic and deploys like the aegis, a battering ram by the conventional definition would mean bolting on a physical extension of the vehicle.
That said, I do enjoy a good ram. So maybe instead of a pickup, ramming could just be something vehicles can do on their own. It would be like a quick burst of thrust from the engines, enough to slam into someone your tailgating, but it's on like a 20-30sec cooldown. It wouldn't actually do damage either, but just mess up the other racer's driving. This may already be too much like what the pulse push aims to be, but I still like the idea of having some kind of offensive abilities without pickups.
give me fuel, give me fire,
'tis all I truly desire