I'd like to show you my two most recent mocs: my two beach buggys.
No. 1 is a heavily modified version of Jack's Beach Buggy (Set 70428).
I took the original "chassis" - which was the main reason for getting this set - and made it a bit more suitable for the average Lego City inhabitant :)
No. 2 was a bit more work.
I got the basic idea by building the 70422 Shrimp Shack. I really liked the vehicle parts in dark azure, the 'cockpit' and the hood, but the build from the set was just unsatisfying.
So I build something completely new from it. I don'T have all the parts though, so this one is just digital :/
If you like them, you can get the instructions for free on rebrickable: