I just got my Vitesse D5 for city use. I was thinking about as many ways to use this bike, and one obvious issue is grocery shopping. So I have questions for those who go to grocery shop with folders: (1) how do you lock the bike or carry it in to the store? I thought about putting the bike folded on the shopping cart but this may be problematic (size issue, scratch to the bike, ...) and the idea of locking the bike outside seems not to fit for this type of bikes and also invite theft... (2) what are good panniers/bags/etc. for this purpose? Front or rear mount type? I am thinking about a bag that attaches to the rear rack since the center of gravity is still low with this 20" bike. But I see comments by those who think front bag is easier to ride. Any comment on this?