Mechanics page, is actually a height reference rather than width.
The height does look to be 1 third of the length, I can’t imagine a bus 11 feet wide and 11 feet high They must have remained in service for a little while as the collection of pictures linked above shows evidence of a repaint (unless the two sisters were painted in differing liveries, which I think is unlikely).
The interior shots in the film show just how ingenious the layout was, and–as has already been pointed out—what a nightmare any attempt to escape would be in case of fire or overturning.
At one point in the film it looked as though the retractable steps for access to the upper seats blocked the door on the lower level.
Amongst other things, unless its an illusion, it appears to have single rear wheels on the rearmost axle – the thought of a tyre blow out on the autostrada makes one cringe, and would make any attendant tyre fitter (if one could be found) consider his options.
Always one to delight in trying a new and revolutionary model when I was a driver I’m sure that I’d have run a mile rather than tackle that !!
Quite right, John, the eleven foot width was a quote from the US magazine, but this photo gives an idea of its imposing appearance. Further trawling reveals that there was serious thought given to a full length Triplex version with the option of an open top on the third deck. In view of Italy’s (Mussolini’s) quest to gain dominance for air, sea and land transport at this time, this bus must have seemed to be cutting edge technology.
Not sure I would relish a ride unless sitting near to the emergency exit.
One illustration shows the front tyres with the Michelin marks highlighted (probably for publicity purposes) but whether the rear ones were double or very wide singles is difficult to tell.
Looking at the proportions in the picture, I suspect that the 11 feet reference, taken presumably from the Pop.