When I brought my 166 I thought someone had spraypainted the glovebox, all sticky & gooey & soft.. A quick google revealed the truth.. Anyhow here is a fix- if you dont mind a bit of elbow grease & getting stuck in, excuse the pun. I started with the glovebox because it was so disgusting I didn't even want to touch it. Nothing seems to move this coating at all! I read a few threads about it & set to work. Armed with heineken (was a warm day!) I pulled out the trusty brake clean- no didn't make a dent on the awful tar like substance- my interior is black by the way. Petrol, kero, nail polish remover, foaming wheel cleaner, degreasers... Man this is hard work & getting really frustrated now.. More beer. Scraped a bit off with a blade & found it was 3-5mm thick in places. Yuk. Now that it had nearly every chemical known to mankind thrown at it I thought I'd better wash it off in some hot water with a bit of multi cleaner to get rid of the petro-chemical stuff.. & hey presto it started to break up a bit.. So refill the tub with super hot water & soapy multi cleaner & away we go! I used a scotchbrite pad as well. It took 4 go's at it to get it all off & alot of sweating but was really worth it. Underneath the goo the plastic is black & has the same pattern as the top parts of the dashboard that isn't coated. They only seem to have coated around the lower dash thankfully, I have no idea why they did it either?? A friend of mines seen the same awful stuff in Maserati's & fiats. Must be an Italian thing. I went in a bit too eager with the blade so had to give it a quick light spray with 3M vinyl spray- flat black. Looks really nice & factory & no more stickyness! Hopefully this helps some of you with sticky bits! Cheers!