The US program investigating these things is called
RPGNET, and is being run by DARPA. The picture on their website shows primarily the HMMWV, but you can see a Stryker in the background with some fitted as well. I can find some pictures of these being fitted in the field to
US trucks, but I'm sure more digging would turn up more instances and different vehicles. These are relatively recent, so its also something one might expect to see more of in the coming months.