Annnndddd - six months later we have the following situation:
1 - Super Cruise still has not arrived in dealerships and just received a rather depressing performance and usability review from a media outlet that tested it on LA's challenging (read - crappily marked) freeways for several days.
2 - Tesla's AP2 has continued to evolve and improve in realtime - as of course we all knew it would. Why anyone thought 6 months ago that the AP2 of late October would behave like the AP2 of April is a head scratcher. Since your original post AP2 has gone through 7-8 updates, two neural net files, accumulated millions more miles, uploaded tons of video for reinforcement learning - and as we all know has dramatically improved its performance (as of course we thought it would) in the last 14 days alone.
I'm not hating on GM - I want them, their customers, their workers and their shareholders to prosper. But the fact is they've worked on SC for years - both independently and after acquiring Cruise Automation - and yet it appears that they have shipped a gimped product with serious usability and performance shortcomings. Hopefully they have built in an upgrade path where owners can at least go to dealers to receive updated software files that perform better in poorly marked conditions as GM continues to refine the software. It would be nuts, if after 5 years of Tesla's OTA update system GM did NOT build in a a software upgrade path for Super Cruise - I imagine they did. Anyone have confirmation?
Meanwhile AP2 is a pleasure, getting better by the week and has nowhere to go but up. Be happy with your car - you chose well!