Recent YOUTUBE video on Garmin 1030 notes a feature that as rider approaches a known segment, 5 sec prior, previous best results are displayed. As segment is ridden, data comparison is noted. ZWIFT needs this option displayed in order to provide real time motivation to improve beyond the previous segment ride.
Addiyionally, average spd, cad, hr and pwr needs to be displayed to motivate the ZWIFTER to perform at their peak.