HP was famous for its tadpole trikes. This is now a surprise that the company has developed a delta trike and goes head to head with competitor Hase in Germany. 

I haven’t tried this trike myself but looking at the fact sheet, it addresses a large and growing market at the intersection of comfortable and inclusive mobility. Yet, it comes at an expense of slightly less transportability. It might also not be as aerodynamic as many of the tadpole models.