I just drive a cheap ****ter van, everything gets chucked in and there is sand everywhere .I had a more expensive car once and it was always full of sand anyway and the even if it wasn't the sea salt ate it .The ****ter essentially does the same job as a more expensive car (gets me and all my **** from a to b)
I'm currently married and don't really need to impress anyone so again the ****ter does the job
My car is full of sand too its just contained.How do you get from sand in the car to having a later model car means you are trying to impress someone !
Dual cab ute with a canopy solves the problem - but I still manage to get the cab dirty on my own without sands help.....
I was at a Ray's outdoors and I saw a long rectangular bag made out of tarpaulin and marketed as a "boot bag" or "boot liner" looked like it would work well.
roll your kite up in carpet, and mask tape the ends, that would work, has for me for a few things 
Got a flat tyre the other day (first one in 10+ years), and when I lifted the back section (it's a commodore wagon) to get the tyre, I found the spare floating in 2 litres of ocean briney! I was using one of those plastic tarps for all the gear to sit on .. caught the sand .. somehow the water got past!
But your other ute is still sexy!
