@Hal H Highline Customs in Beaverton hooked me up with all that 2 days after I got her.another one that works (and cheap) is get mineral spirits from the home improvement store - like many of the tar remover products, you'll have to re-apply waxes as it will remove them.
Don't know about ceramic coatings and how they hold up to bug / tar remover chemicals.
a lot of the states will be doing repave projects - especially the ones that get significant winters and with the hot summertime temps on that drive - there's going to be a lot of freshly applied asphalt that the tires will sling tar onto the car
another tip - get PPF at a minimum for the front bumper, front flares and rear flares. Otherwise you're going to see stone chips on them. The flat WB front nose is prone to getting them...you don't want to spend the next several years noting that your recently acquired Challenger looks like bb-gun pellets hit the front after a cross--country trip
good move since there's some much crap on the crappy PNW roads - got more stone chips in the first two years there vs. 8 in CA