The Suicide Truck's speed is not constant. It starts out at approximately 0.8 and accelerates until it reaches 2.5. This requires it to travel a distance of around 500 - 600. ( Distance is a estimation )
It appears the armor of the Suicide Truck is more vulnerable to Anti-Infantry bullets then to Anti-Vehicle bullets (Copter Drones > Warhawks). However, Information dated on 23 May 2013, state possible armor changes may be likely to occur. The same case goes to the Flame Assault Vehicle and Shock Tank.
The Regular Suicide Truck has 6 barrels of explosives while the Elite version has 14.
The Suicide Truck appears to have a similar cab as the Gatling Truck.
TIP: Suicide Trucks are very ineffective against Laser Turrets in a direct attack. 2 Lasers can easily destroy them. ( Even two Level 1 Laser). Therefore other tactics should be considered.
The Suicide Truck has been upgraded for your destructive pleasure. With a higher top speed and improved targeting, your enemies won't know what hit 'em! (Game Update on 23 December 2012) (Speed Increase : 0.9 - 2.5).
Tip: let your suicide trucks spread out to avoid grouping them so the cryo would not affect them all at the same time.