Bus Stop Classics:  1985/86 Necochea Aerobus – Argentina’s “Bullet Bus”

This is certainly an interesting vehicle – it’s a touring/intercity bus built by Argentinian company Necochea Coachbuilders – and it’s called the “Aerobus” – but more colloquially known by the locals as “The Bullet Bus.”

Necochea had one objective in mind in building this bus – improved fuel efficiency.  It accomplished that by using aircraft fuselage techniques in constructing the body, mostly aluminum monocoque, and enhancing overall aerodynamics.  It pretty much succeeded on both counts.

The aluminum body went over a Brazilian-built Scania K-112 chassis – with a longitudinal Scania D11 eleven liter six-cylinder diesel in the back, putting out 225 hp and 900 ft. lbs. of torque.  This was a large coach; 14 meters in length – 45 feet. 

The buses were quite the sensation when first introduced – passengers were taken with the space-age styling and operators reported a 10% increase in fuel economy compared to other buses.  

But problems soon developed – Necochea was a small manufacturer and this was their first attempt at building a bus.  They had a mostly non-mechanized production line and quality wasn’t their strong suit.  Then complaints arose regarding the round aircraft-style windows which weren’t as large and airy as regular bus windows – passengers weren’t happy with the limited visibility.  Then the air conditioning systems started failing as they were undersized and weren’t sufficient to cool the coach.  

A total of twelve were built from 1985 to 86, and used mostly by Argentina’s two largest intercity operators, but were pulled from service within three years.  Fortunately one has been preserved and restored by operator Urquiza – the pictures above are of this restored coach. 

As these buses were being withdrawn, another manufacturer, Cometal, was having much better luck with a similar though more traditional coach – the CX40.  Introduced in 1987, these buses were very successful, being built over eight years.