Jalopnik's Jason Torchinsky discovered an 1833 letter to Mechanic's Magazine in which one "Junius Redivivius" spends two highly entertaining pages debunking the elaborate claims made by Dr. Church's Burmingham Steam Carriage Company about its forthcoming wares.
If that drawing be a correct representation of the vehicle constructed by Dr.Church, it is in itself conclusive evidence of his utter unfitness for the purpose of promoting steam locomotion... the thing looks like a car of Juggernaut, intended to be moved only under the influence of a strong internal excitement, rather than a vehicle intended for the purposes of everyday utility. It looks like a mountain, and a mountain scarcely to be moved. If there is one form of carriage more liable to overset than another, it is that of three wheels in a triangle...
...In the drawing all the wheels are of one size, and "Impartial" states them to be eight feet in diameter. Thus, the heads of the outside passengers, who are so comfortably and leisurely seated on stick chairs or benches on the roof, must be some four-and-twenty feet from the roadway... I fear the pedestrians would outstrip them in speed... and ask, as they pass 'what the temperature may be at that height?'
As Torchinsky notes, Redivivius was right, "Church's lumbering steam-beast did not, in fact, run as planned, and later reports suggest it only made one trial run, in 1835, for three miles before becoming damaged while making a turn."