The mechanic at the local bike shop rides an ebike to work. It 5 minuets slower than driving. He placed top 10 in the cross series last year with his only training riding to work. He would turn the assistance off and do intervals and then turn it back on to recover so his recovery speed was as high as his interval speed. One of our local TT guys bought an ebike for his girlfriend. She is a good rider but can’t really keep up with him when he is going full tilt.