There are a few brands out there that do this stuff, but the one that we apply here, and that I would reccomend personally, is the 3M scotchguard invisible shield. it is a urethane, with a glossy topcoat, and is about eight thousandths of an inch thick, or about twice as thick as most pin stripes, decals, etc..
there is a company called invinca shield that sells kits for the maserati's that have each piece cut out, ready to apply. application is fairly straight forward, and with patience, can be done by the do it yourselfer.
There is a 5 year warranty on the film from this company, and considering most people wash\wax and dont drive their maserati's everyday, i would assume most should see a minimum of 8-12 years before seeing any change in appearance of the film.
3M's headquarters are about 30min from our store in St Paul, MN which is where they have done their product testing, and achieved results of 7 years of daily use, without change in appearance.
3M initially developed this film for the US military as an application for helicopter rotor blades, to lengthen their service lives, and has since begun using layers of this film (slightly modified) for helicopter windshields, where you pull a layer away, and you have a new clear surface.. this same technology was recently applied to nascar windshields as well.
let me know if anyone wants more info