As mentioned, not a heck of a lot going on in Lincoln -- nice place... small-town kinda feel... nice people. There's at least one cool HD shop there (Frontier HD -- it's an older shop that has been assimilated by the Madison Avenue approach, but none-the-less, nice shop)
Was there last year in June, and will be again in mid-June on the way to Omaha. Lincoln, NE (as I'm sure you will be happy to know) is the competitive Roller Skating Capital of the known Universe!! (woo hoo...

) Nationals is in Omaha this year, but was in Lincoln the last couple.
Not too far from Kansas City -- the HD Powertrain Assembly Plant there is worth the trip. Nice roads, rolling, lots (
lots) of corn growin'.
Have fun!
Regards,
/keith