I got to see one form in a field about 1/3 mile away, but I was on my motorcycle.

I was riding along a highway in rural Nebraska about 20 miles north of Norfolk. A big storm was brewing and I was trying to make it into town before things got bad. A car ahead of me suddenly slowed and the occupants all had their mouths open and were pointing. I looked to my right and saw the tornado forming.

Probably wasn't the proper safe response, but my reaction was to open the throttle all the way and get the heck out of there.