The UCI rules are... extensive; it's definitely disallowed [1]. Even if not, there's a rule along the lines of "any technical innovation must be pre-approved," and I am pretty confident it would not be.
[1] Probably by article 1.3.010: "The bicycle shall be propelled solely, through a chainset, by the legs (inferior muscular chain) moving in a circular movement, without electric or other assistance." - https://www.uci.org/regulations/3MyLDDrwJCJJ0BGGOFzOat
[1] Probably by article 1.3.010: "The bicycle shall be propelled solely, through a chainset, by the legs (inferior muscular chain) moving in a circular movement, without electric or other assistance." - https://www.uci.org/regulations/3MyLDDrwJCJJ0BGGOFzOat