I chose to build a vehicle for an attempt at the H/DT record, because I thought that I stood a reasonable chance ($$$$-wise) of building a vehicle that could contend for this record.
Like anything else, the costs add up very quickly, but I am committed to completing this project and hopefully being competitive against the existing record.
When you think about it, there aren't many vehicles that have ever been available in the USA which would meet the 1.5L diesel truck description. In terms of a marketing niche, I think there's a definite hole there. If we can get reasonable diesel-friendly legislation on the books, I think there's a big potential market for small trucks with small diesel engines, especially if they are diesel/electric hybrids.
When that time comes, I expect that someone will build a 1.5L diesel truck for LSR racing that will readily beat anything currently on the salt. The current and previous recordholders in this class were Rabbit Pickups - not exactly known for their aerodynamics, and not exactly "late model". If Toyota, GM, Ford, Dodge, VW, Isuzu, Subaru, etc. comes out with a sleek, aerodynamic, small diesel-powered pickup truck, it's just a matter of time before somebody shows up with one on the salt.
There are some very cool diesel engines available in Europe which probably have more power potential than the one(s) I have in my garage, but they are in Europe, and I am in Missouri. My goal for now is to try to use "old school" techniques to boost the power of a 1.5L mechanically injected diesel, and have fun while doing it.
Steve.