It surely is, but that deceleration toward the zero velocity contact point starts at the horizontal spoke point to the axle. The regain of thread velocity over the road to vehicle speed is gradual too. It is not a jerks suddenly to a halt.and instantly fast again. so: The whole equator region from the standpoint of the solar field, the analogues road, is at an decelerated, slower, longer exposure with respect to the sun, while maintaining a constant rate of spin. and Do not underestimate importance of the Sun, the Jupiter 2 way interaction, They have a barycentre even outside the Sun, with a little help from a friend or 2.