The ETI joint venture was dissolved in 2004, shortly after an unsuccessful bid to supply trolleybuses to Vancouver.

[4][8] ETI originally was based in Dayton,[9] but after completion of the contract for that city, the Dayton office was closed and ETI moved its administrative office to Hunt Valley, sharing space with partner AAI there.

[13] The company was awarded its first contract in November 1994, when the Miami Valley Regional Transit Authority, of Dayton, Ohio placed an order for 63 two-axle trolleybuses.

[18] In February 2000, Muni exercised contract options to purchase an additional 20 two-axle and three articulated vehicles.

[24] With both the Dayton and San Francisco orders, the chassis/body-frame (or shell) and motors of each vehicle were fabricated at Škoda's plant in Ostrov nad Ohří, Czech Republic, then shipped to a facility in Hunt Valley, Maryland (near other AAI facilities) for initial fitting-out.

[7][9][31] Except in the case of the prototypes, final fitting-out was undertaken in leased premises located in the two cities purchasing the vehicles, Dayton and San Francisco.