What is the safest way to travel ?

Answer 1

Wear a scuba suit and wear a mask on your mouth.   and any travel is safe.  

Answer 2

Relative to covid exposure, it is safest to travel in your own car.

Take precautions in places where you have to stop, such as 

rest rooms and restaurants.

OK, now: What happens when you get "there"?

Will you be entering a new covid bubble?

That could be the most dangerous part of your trip~!

Answer 3

Right now, car.  You don't want to be jammed onto anything-plane, bus, boat-with lots of other people.

Answer 4

Air travel is generally the safest.