German car rental giant Sixt pledged that at least 70% of its fleet would be made up of hybrid or electric cars by 2030 on Tuesday. The proportion of hybrid and electric vehicles in Sixt’s global fleet stood at just 10% midway through the year, making the target an ambitious one, though the company said it expected that proportion to rise to between 12% to 15% by the end of 2023. In addition, Sixt plans to make it possible for customers to charge rental cars using German public charging stations during the course of the coming year. Founder Alexander Sixt, who runs the company with his brother…