The ornamental design for a foldingelectricbicycle, as shown and described.
FIG. 1 is a front perspective view of a folding electric bike showing my new design;
FIG. 2 is a left-side elevation view thereof;
FIG. 3 is a right-side elevation view thereof;
FIG. 4 is a front elevation view thereof;
FIG. 5 is a rear elevation view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a rear perspective view thereof, wherein the bicycle is shown in an alternate configuration with its head tube and frame tube entirely folded.
The broken lines in the drawings illustrate portions of the folding electric bicycle that form no part of the claimed design.