SCCA is hosting weeknight HPDE events across the country. They are in the afternoon , I leave work about 2:30 get on track for the first session at 4:00 and home by 8:30. They have 3 run groups (novice/intermediate/advanced) and each group gets 3-20 min sessions for $150. They even have a parade lap that you can take family out on track in your car.
For the money, its the best deal out there. If any of my fellow track junkies are planning to do one of these events, let me know as I have a coupon code that gets you a pretty nice discount.
If your anywhere near Pittsburgh, they have just finished the South track. SCCA has secured the Full Track (2.8miles) for July 14 so they will be the first HPDE to host an event on the new track.