Good question. Some options. (1)run flats: generally expensive and ride quality suffers (all other factors remaining equal).(2)slime fix a flat kit. Easy, cheap, but no good for tears or large punctures, (3) maybe they are planning a spare and jack. But that then brings us back to the tire size question. Will rear be same size as fronts?
I always carry a jack, especially on long trips, and AAA & cell phone. Also I already have 'this' to place in the trunk of my Elio, in addition to their can of 'Fix-a-Flat'!
I'm to old to do breakdown repairs.......so it's swearing, call AAA, and a little cussing while waiting for truck to arrive.
I've only had one flat in 51 years of driving and only expect one more in the next 40 + years of driving.