What careers are on the cutting edge of technology?

I want to be working on the most up to date life changing technologies. not like medical life changing , i mean like the next t.v. life changing. a better automotive engine. a jet pack. a stronger metal that would allow buildings to double in height. flying cars!

I like to think big. and in the next 30 years i think there will be bigggg changes in technology. i want to be on the front line when it does