On September 20th, 1989, Apple released the Macintosh Portable, the first true mobile Mac and a much-maligned machine. It didn’t sell well and is very rare today–not due to any particular design failure, but because the original price was a whopping $6,500-$7,300 ($11,288 to $12,677 in 2009 dollars). It wasn’t the only Mac to cost that much, but others in that price range offered top-of-the-line performance. The Portable was both too expensive and too underpowered to catch on. Its large size didn’t help, either.
Hit that link for some take-apart photos.