I take it that the GC1 is going to be a Gran Canarian version of our M60 motorway then.
I can't see a motorway looping the entire island for a long long time. However, it's probably more likely than the A14 being upgraded to motorway or something. The GC-1 is already more adventurous than any motorway in Britain, with more grand scale tunnelling progressing. The GC-3 is a very adventurous motorway too. Previously, to get from the GC-2, serving the north coast, to the GC-1, serving the east and south coast, you had to drive through Las Palmas. Sorry, I might be misleading people here, you had to drive through a big tunnel under part of the city which linked directly to the GC-1, so not exactly London North or South Circular! The GC-3, apart from being tunnel after tall viaduct after tunnel after tall viaduct, also features a short double deck type section, whereby the local road runs elevated above the central reservation of the motorway between roundabouts that the motorway tunnels under. I've only done the trip once, and it was far too much to take in on one trip.
So much engineering, nicely compacted into an island the size of a county like Hampshire!