I have been spraying cars and trucks with Fluid Film for years. Hundreds of different makes and models. I have applied it to both of your vehicles, so I thought I'd chime in here. Basically, with the CR-V, you can access much of what needs spraying without putting the car on a lift or even jacking it up off the ground. You won't get to much from underneath the front of the car, but you can access underneath the engine and all of the front suspension areas from the sides. As you move to the rear, you'll have access to pretty much everything from the rear sides and the rear itself. Most of what's vulnerable is underneath the back of the car. The fuel tank, suspension, sway bars, tow hitch if you have one, brakes, struts, and everything else is in plain site. As for the Frontier, you certainly don't need to jack this truck up at all to get to everything. Just put a piece of plywood or something on the ground and start spraying. This truck is definitely high enough off the ground to reach all that needs to be reached. Basically, I'm saying that if you bought a gallon or two of Fluid Film, an undercoating spray gun, some air line, and an air compressor, you could do this job yourself this year and every year thereafter. And all this equipment would probably cost the same as what a garage would charge you for only one application on both vehicles. Dewalt has got a great little pancake compressor that's perfect for this type of job. Good luck.