I'll give this a shot - I've done plenty of road-trips (still do some with my family - lots harder with kids) and was fortunate to make some trips overseas.

Canada (Winnipeg, Toronto, Niagara Falls, Windsor *cough*bachelor party*cough*)
Japan
England
France
Italy
Spain
Greece
Yugoslavia (Serbia)
Austria
Germany
Czech Republic
Poland
Sweden
Mexico

U.S. States
Michigan
Indiana
Ohio
Illinois
Wisconsin
Minnesota
Virginia
Maryland
Washington
Washington, D.C.
North Carolina
South Carolina
Georgia
Tennessee
Kentucky
Alabama
Louisiana
Arkansas
Texas
Oklahoma
Colorado
Arizona
Wyoming
California
Hawaii
New Mexico
New York
New Jersey
Missouri
Kansas