[QUOTE=euromodder;255165]
Patenting won't work, there are plenty of aerotails out in the wild already, so one can't claim the idea any more.
-- I know this, but the people who tell me to get patent don't
I hate to be a spoilsport, but IMO it's going to be a niche market at best - well, I bet they said that about velomobiles as well
- and few cars are similar enough to fit one aero-hitch.
-- In Holland you can buy trailerhitch boxes .(i can't post pictures yet)
They are just square plastic boxes costing between 400 and 700 dollar.
They could make one that has somewhat of a boattail shape. So it at least doesn't increase fuel consumption and hopefully lowers it a bit.
Did you happen to find some EU regulation allowing these racks for general purposes ?
In Belgium and on passenger cars, an extension is only allowed for carrying bikes and wheelchairs - and even then only in a rather roundabout way.
It's allowed to stick out 1m.
-- I kept my tail just under 1m
In Italy, you'd even need a red/white striped plate on the back.
[QUOTE]
-- I looked up the rules for Holland.
You can have basically anything attached to the back as long as it's safely attached.
The only rule is having freely visable lights and license plate.
This means you need an extra set of taillights and an extra license plate.