They are push pull coaches and cab cars. at $394K they are a bargain. the design is Budd company deliverd in 1992 complete stainless steel.
A new Comet V or aluminum Comet IV runs about 1.8 million $ and would take about two years to be deliverd. the New Haven line needs seats now not in two years. here is write up on these cars and picture:
MAFERSA VRE's original car built in 1992 in Brasil, Mafersa trains are
single level instead of bi-level, making them the lowest-capacity cars in
VRE's fleet, with seats for about 100 passengers (bi-level cars have seating
for between 135 and 161 passengers).
The seating is "three on two," meaning that when you walk down an aisle, a
row of three seats will be on one side of you, while the opposite row has
two seats. Due to complaints that the Mafersa seats were too crowded, VRE
re-spaced all the seats in 1999 and 2000, removing a few rows of seats and
adding tables in the middle to provide more legroom and work space. The
seats, however, at 18 inches wide, are the narrowest.
Restrooms are located in the cab car (the car that's furthest from the
engine and that's used by the engineer when the train is in push mode). The
luggage racks are also considerably larger than those offered on the
Kawasaki cars.
http://www.railpictures.net/viewphoto.php?id=29102