Bond ETF's Among the Most Expensive to Borrow: Markit

I don't quite understand what the locomotive is doing in this story but thought it might be important.
From Securities Lending Times:

Bond ETFs aren’t cheap to borrow, finds Markit

London | 23 May 2014 Bond exchange-traded funds are among the most expensive to borrow in the US ETF market, according to Markit Securities Finance. 

Markit analyst Andrew Laird charted the top 20 most expensive-to-borrow ETFs, with the top six including Vanguard Intermediate Term Corporate Bond ETF and Market Vectors Emerging Markets Local Currency Bond ETF.

Laird said: “As interest rates remain at historic lows, some investors will no doubt see ETFs as a conduit to take a view on rising rates, especially given the logistical issues around shorting bonds.”...MORE