根据所提供的信息，特斯拉Robotaxi新城市推出的速率正在加速。这种加速趋势在2026年尤其明显。 这项归因于Grok的分析指出，多城市推出之间的时间间隔显著缩短。具体而言，时间间隔已从261天大幅减少到76天，最近更是缩短至仅18天。这一趋势表明新城市推出的频率急剧增加。 这些结论是从一张表格中得出的，该表格跟踪了推出间隔、新增城市、距上次事件的天数以及累计城市数量。

Based on the provided information, the rate of new Tesla Robotaxi city launches is accelerating. This acceleration is particularly noted for 2026. The analysis, attributed to Grok, highlights a significant shortening of the gaps between multi-city launches. Specifically, the time intervals have dramatically decreased from 261 days, to 76 days, and most recently to just 18 days. This trend indicates a sharp increase in the frequency of new city launches. The conclusions are drawn from a table that tracks launch intervals, cities added, days since the prior event, and cumulative cities.