The publication of Unsafe at Any Speed resulted in the wide- spread use of which feature on automobiles?

In the resolution issued by the Voronezh peasant assembly a manifesto was issued proclaiming the gradual abolition of redemption payments for land allocations and the expansion of peasant bank funds. The government of that time would be able to satisfy the essential needs of the peasants. On the other hand, in the assembly issued by Samara the peasants want land and the prohibition of hired labor. We can say that there was no contradiction between the two documents, since the interest was to help the peasants.