The E5 Hayabusa Shinkansen set is one of the newest in the JR system. I departed Tokyo Station and rode a green car to Shin-Aomori Station. Distinctive green colorGran Class car JR East Hayabusa logo Ekiben (station box lunch) The toilets are amazing for being on a train Green car cabin
JR West Hikari Railstar trains do not have green cars. But, the reserved coaches are quite comfortable a step up from other JR Shinkansen coach seating. Additionally, non-reserved coach seating on Railstar trains is old and cramped so be sure to always get a reserved seat when using the Railstar.