Out of all three of the options you've presented, your idea of teleportation sounds the best out of all three of them. Your time travel concept sounds too limited, and flying cars are useless.
With the teleporters you've given us I imagine that...
-There would be no need for a car or all of the expenses that come with them.
-Needless waste of humans lives attributed to car accidents would cease.
-Assuming these things are sufficiently advanced and eco-friendly, dangerous pollutants from the things we rely on to travel would be a thing of the past.
-There would also be no need to pay for a rental car, get on a bus, or fly on a plane in a world with teleporters. Seeing out of town relatives or going to new and exotic countries would be a breeze.
-Space exploration would be much easier; providing astronauts with things like healthy food, breathable air, and water seems like it would be easy as pie seeing as one could build a teleporter in a space ship or bring one to the place they're exploring and have it link to one at NASA.
I mean sure there are some downsides like bad people using instant point to point teleportation to do bad things, but it just sounds so much better to me than a time machine that can't even go back to when it first existed or an impractical flying car that's no more convenient than a plane or helicopter.