The Torker Cargo-T bicycle from SBS has a headset lock. You twist the headset lock and it stabilizes the front by locking in the forks and basket. This “anti-wheel flop” device is especially handy if you have the front racks loaded with a basket and filled with goodies.
This is on the new Torker Cargo-T bicycle: a cargo bike with 4130 Chromoly frame and fork, step through frame, centerstand, chainguard and fenders, 3 speed Sturmey-Archer hub, coaster brake rear and roller brake up front. Available now from SBS through your Local Bike Shop. MSRP $639.99, one size fits most.