Let's see...
Last year we sacrificed driving for ... well, just sitting there and not driving. Turns out that wasn't such a good idea! So this year we decided not to do that again.
We willingly sacrificed treads for wheels (yeah!!!).
We willingly sacrificed sleep to finish the robot (almost - the day isn't over yet)...
We willingly sacrificed our sanity to allow several members of the team to stay on...
We willingly sacrificed our home lives, free time with our families, several assignments at work, grades at school, personal hygene, tools from our shop, money from our pockets, any semblance of a nutritious diet, all forms of an ordered lifestyle, and endless hours in the robot shop, all to build a team that quickly became "family"...
and finally - I willingly sacrificed my humility and self-respect for a box of Krispy Kreme donuts.
-dave