Fig. 6 shows a gasoline vehicle made by Panhard & Levassor, who are perhaps the best known French manufacturers of automobiles, as their vehicles have been the winners in all the notable races held within the past few years. The motor they use is shown in Fig. 7, and, as can be readily seen, is of the two-cylinder type, cooled by a water jacket, just as in Fig. 1. The explosion is produced by means of a hot tube, as explained in connection with the last-named figure. This motor is placed under the body of the vehicle, and is connected with the rear axle by means of a train of gearing which terminates in sprocket wheels and chains that connect with driving wheels, each one being operated by a separate chain. In Fig. 6 the sprocket wheel and chain are well defined, and forward of these can be seen the outline of the casing enclosing the gearing. [Illustration: FIG. 8. GENERAL VIEW OF RENAULT VOITURETTE.] [Illustration: FIG. 9. PLAN OF THE TRUCK.] [Illustration: FIG. 10. VARIABLE SPEED GEAR.] Fig. 8 shows another European design, in which a variable-speed gear is used. The plan of the truck, showing the general arrangement of the mechanism, is presented in Fig. 9, and the details of the variable-speed gear are shown in Fig. 10. The motor is located at _A_, and through a friction clutch _B_, and the variable speed gear _C_, it rotates the shaft _H_, which runs lengthwise of the vehicle. Motion is imparted to the hind axle by means of bevel gears contained within the casing _D_. The large bevel gear on the axle is of the differential type, so as to drive the wheels _R R_ at the proper velocities. When a high speed is desired, the variable speed gear, Fig. 10, is set so that shaft _M_ drives _N_ direct, the clutch at _E_ being moved so as to interlock. _N_ is the end of shaft _H_, so that with this connection the bevel pinion, which meshes into the axle gear at _D_, revolves at the same velocity as the motor shaft. By moving the handle _V_, Fig. 9, to the right, an intermediate speed is obtained, and by moving it to the left, the carriage is run at the lowest velocity. When the handle _V_ is turned to the right, the ends _M_ and _N_, which form the clutch _E_, Fig. 10, are separated, and at the same time the lower shaft _H_ is moved toward _M_, so as to cause gear 1 to mesh into gear 2, and also 3 into 7. By this means the end _N_ of the axle-driving shaft is rotated through the train of gears 1, 2, 3 and 7. If the handle _V_ is turned to the left, the shaft _I_ is moved toward _M_, so as to cause gear 1 to mesh into gear 4, and gear 6 into 8, the latter being secured to end _N_ of the axle-driving shaft. The speeds obtained by these changes are in the ratio of nearly 1, 2 and 4. [Illustration: FIG. 11. PLAN OF THE TÜRGAN-FOY VOITURETTE.]