After church and a lunch with friends, I took off south from Chicago for the I-70 corridor. The RUC model showed a prominent band of CAPE for that area, so I targeted I-70 just west of Indianapolis, thinking I would drive westward into the storms and get a good lightning show and maybe some quarter-sized hail.
Some of the storms (as this cloud tops image shows) were fairly developed in the vertical:
http://underthethunder.org/live/images/radar/20100627_kind_et_8a.jpg
No hail seen, but plenty of pretty lightning and a smidgen of video captured. Mission (albeit it a small one) accomplished.