I've just done it to my VW transporter. Its a short wheelbase, so I had to hang it diagonally.

Like OG, I made a stand. Made it out of 2x3 in an upside down design which is self supporting into the corners and took me minutes to knock up. I've got 2.4 m/ just under 8ft to span. Pics to follow when I take my work tools out tomorrow.