Yes, motorcycle-based coffins (hearse-cycles?) are a thing. In fact, a longtime rider named Garland Crabb has been running a motorcycle hearse service out of Colorado since 2006. “After going to several friends’ funerals,” Crabb writes, “I came up with this idea to send a fallen loved one out the way they lived: With a motorcycle! And Black Diamond Motorcycle Hearse Service was created.”
One thing I can’t picture is these services going electric. I think the rumble would just have to be part of the whole thing–it would be eerie to see one of these glide by in complete silence.