I purchased an extended warranty on my Passport due to the reliance on electronic components and our increasing inability to fix things ourselves. I used advice from this forum to score an 8 year/120,000 mile, $100 deductible warranty at near dealer cost.
To my surprise, about 2 weeks later I received a notice telling me that the Roadside Assistance Benefit portion of this extended warranty extends to other Honda / Acura vehicles along with Honda motorcycles in my household at no additional charge.
As shown in my signature, I have a S2000 that now is covered at least with Roadside Assistance. Just make sure you register these additional vehicles as noted in the letter.