The teleportation is very unreal and unpractical just is a time travel.
Teleportation is also something we are not capable of handling mentally, even today we have created technologies we don't yet fully understand how they work and how they in either bad or good way impact our lives, we created states, companies, organizations, laws, societies and more, but most of us are not capable to live the way required to comply with them.
Teleporting using teleporters(some sort of portal or fixed device where you just get in and be sent to the teleporter on the other side) would theoretically be possible, with you being rescanned, dismissed physically to particles and sent to the other side via computer network where you would be again compiled together. Unfortunately I don't think that so huge amount of energy and computation power would be cheaper than using vehicles and technically would be unpractical because you would be only able to travel to set amount of destinations and for the rest you still would have to walk or drive and probably had a vehicle already prepared at your destination.
The teleporting from anywhere to anywhere is more practical and could find use when traveling to outer space and probably not yet reached distances. Either any of the two types of teleporting would be devastating for society and removing vehicles, aircraft, watercraft and their associated structures would cause intervention to our lives we would not be able to cope with. It either would create so hectic life that we would not be able to process so many things in time manner shortened by teleporting, or it would create a lazy society which would (despite destroying millions of transportation jobs) cause most of us to be so lazy that we would not be going anywhere else beyond using teleporting.
I really hope and wish that teleporting will never be discovered and if yes, than not revealed to general public as it would destroy most of the life's problems and beauty of traveling.
The next thing is time travel, the only possible time travel is from present to future via stopping time for an individual by freezing or deeply hibernating him so he won't be aging and be woken up in distant future, technically to this person this long time will be felt like a few seconds. Something like entering some sort of time machine and traveling to any past or future reality by selecting year on a time axis is impossible. Because reality is not a movie with media player seek bar, what happens in the future is not yet created and what happened in the past is nowhere stored for later retrieval, so time travel is something I don't believe ever will exist.