Link bifold ramps

[jsjanitorial]

I have a chance to buy a 10ft bifold link ramp off craigslist. I need a long one because my van sits up high and my driveway is on a hill. This is the bifold that is made to fold up and store vertically. My van isn't tall enough to store this way. Can it just sit on the edge of of my van bed when loading and then be folded and slid in long way? Or is the only option the vertical storage? Right Now I'm using a homemade wooden ramp and it's heavy!
The trifold link would Be Great but it's not in the budget anytime soon.
Thanks.