I'll have to dig the article up, but I believe it was from BYO (maybe "ask the wizard"?)
Anyway, the article stated that there is some general confusion in the homebrewing world about what CaraPils actually is, but that you can simply look at the name to figure it out.
Cara = Cara(mel) = Crystal
Pils = Pils(ner) = light colored malt
Essentially, CaraPils is just a VERY light colored caramel/crystal malt. Thus, it does not need to be mashed with 2-row.
Anyway, just my $0.02... if you go looking around, you'll quickly find resources that say it does need to be mashed.