Using data from the US automobile market, we empirically examine the link between competition and innovation …. Consistent with a large literature, we use patent counts as a measure of innovation. The combination of the US market's economic … interesting market to examine the link between competition and innovation. We use firm-level time-series data over a long horizon …

innovation distinguishing between "dirty" (internal combustion engine) and "clean" (e.g. electric and hybrid) patents across 80 … tax-inclusive fuel prices. Furthermore, there is path dependence in the type of innovation both from aggregate spillovers … and from the firm's own innovation history. Using our model we simulate the increases in carbon taxes needed to allow …