Even Gorilla glue won't help, the tension required to keep two sides of cracked glass together is pretty much insane so if it's going to spread, it'll spread. Avoid potholes, although in this country that's rather a hard thing to do. I've become a master at avoiding em since I started driving my Brabus roadster with £1800 monoblock alloys that'll bend at the sight of a speed bump. That and my suspension is designed for a "track" drive rather than bumpy road use
I have my own car woes, spent £800 on the thing two months ago (full Mercedes C service, clutch actuator and engine mount replacements), another £200 2 weeks ago since whomever did the tracking last time managed to bend the inner tracking rod, so new tie rods, inner rods and ends for me. Then last week I thought I'd get a few poly bushes to install in my shocks, only to find my shocks utterly devasted, so I'll be replacing those whenever they arrive this week. Need to adjust the rear drums while I'm at it. Thank god I got a pay rise yesterday to pay for it all.