Vehicle, being a cycle or motorcycle, comprising: - a frame and - at least a wheel comprising a load-bearing structure having a hub intended to be associated in a rotatable manner with said frame and at least an electrical energy generator device locked together with said load-bearing structure, - electrical energy transmission means (7, 8) from said generator device to a user device associated with said frame and comprising a first conductor unit locked together with said hub and connected to said generator device and a second conductor unit locked together with said frame and connected to at least a user device, where said first conductor unit is able to transfer the electrical energy to said second conductor unit, where said first conductor unit is placed in contact with said second conductor unit, the electrical energy being transferred by effect of the sliding of said first conductor unit onto said second conductor unit and where said first and second conductor unit (7, 8) comprise corresponding conductive portions (11a, 11b) placed in contact to one another; characterized by the fact that said first and second conductor units (7, 8) comprise a first and a second sheet-shaped element (9, 10) respectively, where said conductive portions (11a, 11b) are the type of tracks (13a, 13b) defining a closed profile and formed on the sheet-shaped elements (9, 10) themselves, by the fact that said sheet-shaped elements (9, 10) comprise a respective through hole able to be fitted on said hub, the first sheet-shaped element being locked together with said hub and said second sheet-shaped element being associated idle with the hub itself, and by the fact that said wheel comprises reciprocal approaching means (15, 16) of said conductive portions (11a, 11b) having at least a ferromagnetic element associated with one of said conductive portions (11a, 11b) and at least a magnetic element associated with the other of said conductive portions (11a, 11b). - a frame and - at least a wheel comprising a load-bearing structure having a hub intended to be associated in a rotatable manner with said frame and at least an electrical energy generator device locked together with said load-bearing structure, - electrical energy transmission means (7, 8) from said generator device to a user device associated with said frame and comprising a first conductor unit locked together with said hub and connected to said generator device and a second conductor unit locked together with said frame and connected to at least a user device, where said first conductor unit is able to transfer the electrical energy to said second conductor unit, where said first conductor unit is placed in contact with said second conductor unit, the electrical energy being transferred by effect of the sliding of said first conductor unit onto said second conductor unit and where said first and second conductor unit (7, 8) comprise corresponding conductive portions (11a, 11b) placed in contact to one another; characterized by the fact that said first and second conductor units (7, 8) comprise a first and a second sheet-shaped element (9, 10) respectively, where said conductive portions (11a, 11b) are the type of tracks (13a, 13b) defining a closed profile and formed on the sheet-shaped elements (9, 10) themselves, by the fact that said sheet-shaped elements (9, 10) comprise a respective through hole able to be fitted on said hub, the first sheet-shaped element being locked together with said hub and said second sheet-shaped element being associated idle with the hub itself, and by the fact that said wheel comprises reciprocal approaching means (15, 16) of said conductive portions (11a, 11b) having at least a ferromagnetic element associated with one of said conductive portions (11a, 11b) and at least a magnetic element associated with the other of said conductive portions (11a, 11b).