Credit where credit is do This is the same one as the OPs original I just painted it black. Fair warning the build is not hard but the glue sets up very quickly so build the "T"s first and then link them together but be quick.
Rear shifting bikes do not fit in backwards with out the rear derail-er hitting and risking the chain coming off or damaging the derail-er.
I use 2 ratchet straps on the outside rails to hold it in the truck then just a snug bungee round the neck or seat post to the eye bolts. Using the neighboring eye bolts seems to work better than using the ones right next to the wheel.