But don’t worry, the new hybrids — made by European favorite Volvo — will retain the very British red color for which they are well known for. The new B5L operate with a hybrid drivetrain, which allows the bus to stay in electric mode up to twelve mph. After that, the B5Ls will operate in diesel, which will cut fuel consumption by 25 percent while reducing gas emissions and noise. And while only six of these highly efficient vehicles are currently in service in London, it’s all part of a trial run. If all goes well, more of the B5Ls will be hitting the streets within the next couple of years, making the delightful city more of a delight.