"UP, Wabtec, REG Launch Renewable Fuels Testing"

"According to a May 9/10 Twitter post (see below), the Class I railroad began filling “several of their locomotives with..." (Luczak, 2022)

Click here for full article

References:
Luczak, Marybeth. (2022, May 17th). UP, Wabtec, REG Launch Renewable Fuels Testing. Retrieved from Railway Age: https://www.railwayage.com/mechanical/locomotives/up-wabtec-reg-launch-renewable-fuels-testing/?RAchannel=class-i