light, light carriage
輏 centers on lightness in the context of a vehicle: a light carriage or something not heavy.
輏 combines 車 (vehicle) with 酉, which likely contributes the sound. The exact historical development is uncertain, but the character is associated with lightness.
A carriage 車 with a wine jar 酉 on it: the jar is empty, so the carriage is light.
For ユウ, imagine a light carriage driven by you: you -> ユウ, and you steer the light vehicle.