law:
I haven't seen a track for Choro Q but that doesn't mean Takara hasn't made one...as far as websites where you can purchase them, here are the ones that I frequent:
www.toyeast.com - ToyEast is an Asian vendor based out of Hong Kong with one of the largest selections on the 'net including many of the highly prized rarities. Their prices range from $5.00 for the individual ones up to $55.00 for the collector boxsets.
www.jdmtoys.com - a US vendor out of California...their average price is about $6.95 each. They carry a limited selection of Choro Qs from all the major Japanese auto manufacturers - Acura, Datsun, Honda, Infiniti, Mazda, Mitsubishi, Nissan, Subaru, & Toyota.
www.jspectoys.com - another US vendor out of California. Their Choro Qs prices start at $6.00 and they have a decent selection of cars - better than jdmtoys. Also, the owner frequently post auctions on eBay with starting bids as low as $1.50 under the seller's name 'jdmstuff'. If you bid & win on multiple auctions, you can really save some money.
There are other e-commerce websites that carry Choro Qs but I haven't had any past dealings with them:
www.littleanimeshop.com - a US vendor from CA with a decent selection
www.sweatfrog.com - a US vendor out of NY whose just started carrying Choro Q.
www.hlj.com - Hobby Link Japan...they typically getting the new models first.
Hope this help you out & good luck collecting. ep-3