Zeta and Sigma planned to rob a branch of the Scrooge Bank in Toytown. They asked a

friend Pi to drive them to the scene. They knew that Pi had a number of convictions for

motoring offences and was at the time disqualified from driving. When they reached the

scene, they asked Pi to wait in a nearby side street with the engine running in order to

make a quick getaway. The bank staff managed to raise the alarm and Zeta and Sigma fled

empty-handed. Zeta managed to get into the car, but Sigma was only half in when Pi

panicked and set off. Sigma was thrown out of the car and suffered serious injuries. Pi

drove at speed out of Toytown. He saw Kappa crossing the road some distance ahead and

kept his hand on the horn as he sped towards him. Kappa was panic stricken and stayed

rooted to the spot. Lambda, a pedestrian, saw what was happening and tried to pull Kappa

back. Pi swerved at the last moment and almost avoided Kappa and Lambda, but struck

them a glancing blow, knocking them over and causing serious injuries. After they left the

town, Pi set off for home driving within the speed limit. However, Zeta started arguing

with Pi about the way he had left Sigma behind. Pi's attention was distracted and he failed

to notice a broken down van at the side of the road. He drove into it and caused serious

injuries to Zeta, who was not wearing his seat belt at the time.

Advise Zeta, Sigma, Kappa and Lambda.