Tesla's Full Self Driving may get a lot of news coverage, but Super Cruise from General Motors is currently the benchmark for hands-free highway driving.

In August, GM announced it would expand Super Cruise with more usable roads, and now the American automaker has published the updated map. Super Cruise now functions on more than 400,000 miles of roads in the United States and Canada, which is double the previous number.

An updated map is included below, but some notable additions include Route 66, the Pacific Coast Highway, the Overseas Highway, and the Trans-Canada Highway. Unfortunately, not every GM vehicle with Super Cruise will be able to take advantage of these new roads immediately.

GM says its full-size SUVs will be the first to receive the update. The list includes the 2023 Chevrolet Tahoe and 2023 Chevrolet Suburban (High Country and Premier trims), the 2023 Cadillac Escalade (plus Escalade ESV and Escalade-V), and the 2023 GMC Yukon Denali Ultimate. Only these SUVs built after October 3, 2022, will be eligible, with deliveries to customers slated for mid-November.

This leaves many flagship GM products in the lurch, including the GMC Hummer EV and Cadillac Lyriq. Fortunately, any vehicle built on the GM VIP electrical architecture will eventually gain access to the expanded road network in the coming months via an over-the-air (OTA) update at no cost.

The upgrade should not require a trip to the dealership.

GM plans to offer Super Cruise on 22 vehicles globally by the end of 2023.

Next year, the Cadillac Celestiq will arrive with Ultra Cruise, an improved hands-free driving system rumored to work on local roads, not just divided highways. We don't know what other vehicles will get this flagship technology, but GM says it will be available on "certain premium entries."

More information regarding Ultra Cruise should be revealed closer to the Celestiq's on-sale date.