Yes E85 outlets in Utah and the Wendover area is still not very good, bring an extra can or two.
The last place I know of to easily get E85 along I-80 going out to Bonneville is at
Buford Trading Post
Ethanol (E85)
2 Sammons Lane
Buford WY 82052
Phone: 307-632-3999
Distance: 25.8 Miles (outside Cheyenne)
Access: Public - credit card after hours
http://www.afdc.energy.gov/afdc/locator/stations/Chevron - JP's American Car Care
Ethanol (E85)
1350 E 700 South
Clearfield UT 84015
Phone: 801-773-7222
Distance: 109.6 Miles
Access: Public - see hours
Christensen Oil Co
Ethanol (E85)
524 N 1500 West
Orem UT 84058
Phone: 801-373-7970
Distance: 125 Miles
Access: Public - credit card at all times
Stinker Store #55
Ethanol (E85)
2259 Addison Ave
Twin Falls ID 83301
Phone: 208-733-4827
Distance: 127.7 Miles
Access: Public - credit card after hours
Christensen Oil Co - Crest Gas
Ethanol (E85)
700 E 800 N
Provo UT 84606
Phone: 801-374-5552
Distance: 130.6 Miles
Access: Public - credit card after hours
Christensen Oil Co
Ethanol (E85)
1890 N Main
Spanish Fork UT 84648
Phone: 801-373-7970
Distance: 135.6 Miles
Access: Public - credit card at all times
Larry