Letters and cards will no longer be mailed by USPS. Only packages. Letters and cards will be purely electronic, and electronic thank you notes will be seen as totally appropriate.
There is a fair likelihood USPS will no longer exist.
Amtrak will be gone except in the northeast and 10 lane interstates will be common.
The weather will be a mess and sea level rise will become apparent as the coastal ecosystems and cities like lie Venice Italy, Tampa, FL and New Orleans, LA lose significant real estate or have to institute mitigation measures.
The atmosphere will be very polluted.
Drugs will be awesome.
All kinds of cool tech for sexual release and the further normalization of hard core porn will in turn further erode people's abilities to become aroused through and enjoy traditional sex, which will erode relationships. Divorces will increase.
A higher percentage of people will simply cohabitate and avoid some of the legal entanglements of traditional marriage, which I think is a good thing.
Transoceanic supersonic flight will return on a regularly scheduled basis but be very expensive.
Pot will be legal nationwide and taxed like tobacco.
Oil prices will rise again, in part due to a huge war in the middle east.
We'll have one more great recession sometime in the next 26 years.
The obesity rate will be higher.
Gun control will be implemented, probably to the point where we'll be down to hunting pump shotguns, bolt action rifles and revolvers. Magazines for any semi-automatic firearm, if they are still legal, will have very low capacity.
We'll find microbial life on Mars, or evidence of its past existence.
Alcohol intake will increase, first due to the rise of companies like Uber and then self driving cars.
So, we'll have self driving cars.
People will live in smaller but more efficient spaces, with fast food preparation technology and awesome home entertainment options incorporating virtual reality. You'll watch a college game as though you are sitting in a stadium seat, first person shooter video games will be unreal.
The Deacs will win their first NCAA national title in basketball. Football will be competitive and make bowls but no more ACC's unless FSU goes on nuclear probation and we recruit really well.
All functions on smart phones will be smoothly operated by voice command.
Homes will be "smart homes" with keyless entry and exit, remote cooking, voice controls and other cool stuff.
Paper textbooks will finally go extinct.
People will clone pets regularly.
Humans will be cloned.
Bigfoot will be proven real as the northwest US and western Canada is finally developed.