Its good to talk to other RVers!!
Just this past weekend, I had a great trip to the Florida Pan handle and visited 3 state parks (Florida Caverns State Park, Falling Waters State Park, and Grayton Beach State Park). At Grayton Beach I saw a Class A pulling up towing their Orange Mitsu Spyder on all four wheels. They also had a bike rack as well.
This was something I've wanted to do since I got the old Conquest. Right now i have a SportRack bike rack mounted in my Reese receiver in the back of the MH. I've been wanting to tow my Honda Fit while also carrying the two bikes.
When I saw this Class A come through I let my wife know about it and she said that we would have to go walking the park and go and talk to them about it. It so happens that they in fact ended up at the camp site right across from us.
I preceded to talk to the gentleman about his bike rack (which was a hollywood bikerack) and the fact he was towing his car at the exact same time.
Found out that he had purchased a dual hitch extender from harborfreight.com and told me it was the only place he had found such an item. I ended up looking it up and found that it was on sale for 24.99 (reg 39.99). I wound up buying the dual hitch receiver as soon as I came back to South FL as I have a Harbourfreight 2 miles from my house.
Its good to talk to other RVers as you never know when they will have a tip, or product that you've been looking for all these years!!
PS as far as his claim that harbor freight was the only place that had this thing, I ended up finding something similar on CampingWorld.com for 135.99.
The one I bought was rated for 4000 lb capacity while the one in campingworld was rated for 10,000 lb capacity with 400 lb tongue weight.
I can't wait to actually start to tow my car and still have the room to bring the bikes!