Washington DC to Vegas

We are moving out to Vegas and plan to drive from the Washington, DC area in a mini-van. We are going to take I-70. Optimistically, we hope to make the trip in four days. We were wondering if this was at all realistic. Additionally, does anyone have any advice re: problems we might encounter and/or anything we should be on the look out for? We plan to make a minimal number of stops, but would like to see some sights along the way, are there any attractions that wouldn't take us too far afield?

[Robert Schaller]

I think you'll be able to do the trip easily in 4 days, but it doesn't leave much time for stopping -- but here are some things to choose from -- I like the Lincoln sites around Springfield, IL, the Gateway Arch and Museum of Westward Expansion in St Louis, the Eisenhower Presidential Library in Abilene, Kansas, Georgetown, CO (with its famous "loop" railroad trestle) and Zion National Park in southern Utah.

There are many others to choose from if these don't appeal to you! Bob