Sorry I did not respond any sooner, but I was on a bus.trip and could not answer you people.
First of all the trip in total to Vegas for me is like this.
14 juni get in the car at 9.00 am for a two hour drive to the airport, check in and shop a bit after about two hours we have to check in and leave.Plane leaves at 1.35pm.
I arrive at Washington(Dulles at 3.45 pm)+6 hours this makes a flight time of 8 hours and 10 minutes.
We have to change planes and leave again 5.15 pm.
Arrive in Vegas at 7.20 pm + 3 hours this makes a flight time of 5 hours and 5 minutes.
Total travel time +/- 19 hours and 20 minutes.
Then about the round trip.
First night booked at the Howard Johnson Airport because they have a compl.shuttle.
We leave the next day already(after picking up my intermediate 2 doors at Alamo) through death Valley and no Yos.Park.Did it already in a previous trip.We goto the Peppermill in Reno for three days.(explore a bit Lake Tahoe)
Then we leave and take the loniest highway route and find a motel in Ely.
Next day we take the route to Vegas and stay the last five nights in Vegas.
Only the last night we stay again in the Howard Johson because we have to leave at 8.15 am , so we bring the car back the night before, and take the comp.shuttle at 5.30am for checking in.
The four nights I wait for a good offer to come in the E-mail(another reblast thingy would be nice from the Venetian :>

)
So thats my pre trip report.