This article is interesting; May issue of RV BUSINESS MAGAZINE
Wholesale shipments of conversion bus shells used in luxury RV's and corporate entertainment units increased 10% in 2007 while overall commercial bus sales declined.
According to 'National Bus Trader' magazine, 309 conversion shells were shipped in 2007 compared to 281 the year before, with all but eight of the conversions being 45 feet long. Conversions accounted for 14.2% of the bus market, up from 11.8% in 2006.
The article goes on to say overall wholesale coach sales , seated and conversions, declined 8.7%. The declines were concentrated in domestic seated coaches.
The best selling seated coaches was the MCI J4500 and the best selling imported seated coach was the Van Hool C2045.