AutoZone (AZO), a distributor of replacement items for motorized vehicles, posted a very good second quarter on Tuesday. Net sales increased 4%, and earnings per diluted share went into high gear, rising over 21% to $2.46. According to our earnings preview, the analysts were expecting only $2.34 per share.

Gross margin experienced an expansion, as did the return on invested capital metric (the latter being measured over the trailing four quarters). Both of these developments indicate that execs are skillfully managing the underlying fundamentals of the business. Domestic same-store sales didn't rise as robustly as they did back during the first quarter, moving up only 1%. I would have liked to have seen a better stat on that one, but overall, I'm not going to complain too much, unless I detect a weakening trend in coming months.

The bailouts of late 2008 and 2009 have cost the American taxpayers $61 billion, according to the Treasury Department, but the banks aren't to blame this time. The auto manufacturer bailout, which includes Chrysler and General Motors (GRM), has cost the country more than $30 billion, with American International Group (AIG) consuming another $30 billion.

Meanwhile, Bank of America (BAC) has already made good with the government, and several banks -- such as Capital One (COF), JP Morgan Chase (JPM) and TCF Financial (TCB) -- only have to clean up situations regarding the warrants they've issued. And interestingly, the losses from the bailouts on AIG and auto manufacturers are being offset by profits from the bank bailouts, which could generate additional funds of up to $19.5 billion.

AutoZone (AZO) is in the fast lane. The stock has done reasonably well this year, and the first-quarter report, released on Tuesday, shows that the company still knows how to drive earnings growth.

According to the company's earnings report, sales increased well over 7% and earnings per share expanded by better than 26%. Income was pegged at $2.82 per share. That was way above the call. Our earnings preview indicates an expectation of $2.66 per share. Clearly, management is doing something right.

The Pep Boys -- Manny, Moe & Jack (NYSE: PBY) issued Q2 earnings on Tuesday after the bell. The aftermarket service business for automobiles, whose related companies include AutoZone (NYSE: AZO) and AutoNation (NYSE: AN), said net sales fell about 2%, and earnings per share increased 50% to 15 cents. The earnings growth was actually better than that since there were a couple of items in the previous year's quarter that benefited the bottom line.

According to Reuters, the expectation was for 14 cents per share in net income. Yep, we got the beat-by-a-penny cliche in full effect here. Management credited cost containment and service sales as drivers for the quarter.

Back in August of 2008, General Motors pulled out of car leasing altogether, citing slumping demand, declining resale values, and financing problems. Now the company, in partnership with GMAC, is planning to reenter the leasing market on August 1st of this year.

The Wall Street Journal reports that the final plan is still being worked out, but the Cadillac CTS, "which competes in a luxury market that is heavily dependent on the availability of lease deals," is likely to be among the models included in the leasing line-up.