Gare aux gaffes du gars gonflé

Gare aux gaffes du gars gonflé, written and drawn by Franquin and Jidéhem, is an album of the original Gaston Lagaffe series, numbered R3. It is made up of 52 pages and was published by Dupuis. It consists of a series of one-strip gags.
Story
Longtarin appears for the first time and watch over Gaston very carefully, all the more as he Gaston have acquired a strange automobile. Gaston signs a contract with De Mesmaeker.
Inventions

vehicle to take downstairs: vehicle which slides on the ballisters, but cannot turn
filter for cigarettes: filter which causes explosions, the rights were bought by a joke shop
ejector seat for cars : seat not to leave lying in offices, for it can be dangerous for someone
machine to cork bottles : machine that must been well-adjusted, at the risk of damages
mini-go-kart : roller skate with the engine of a lawn mower
petrol for rockets: dangerous petrol
...