Matt mentioned scraping data in another thread..if you're willing to do that for data (i looked briefly and found nothing for purchase or in a db format), the easiest place to get pretty complete motorcycle listings would likely be kbb.com. It's not ideal, but it's in a pretty sane URL format and layout:
Thanks for the pointer. Took a quick look and it feels like wrangling that data into our current car format would be quite a task. Between this and the EPA mileage project I'm going to be busy for a while.
My guess is that motorcycle data will get a someday priority instead of a before we launch priority.
I recently got a scooter and would love to be able to pit it against my Hyundai. Sadly, not even the Kelley database has my particular scooter (a 2007 Piaggio MP3 250). I'd like to see an "Other" option even if it meant I missed out on the "social comparison aspects."
I agree with Eideteker, I'm willing to help if I can. One thing I suggested in another thread was the option for the user to add a vehicle (with specs,etc) , with a link to proof that it exists to make your jobs easier.